HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2216

PERIOD COVERED:  0000Z (UTC) 09/24/98 - 0000Z (UTC) 09/25/98

Daily Status Report as of 268/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental
Darks pt2/3)

       The WF/PC-2 was used to make a series of Cycle 7 supplemental
calibration darks.  This dark calibration program obtains three dark frames
every day to provide data for monitoring and characterizing the evolution
of hot pixels.  The observations were executed as scheduled, and no
anomalies were noted.

   1.2 Completed Two Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor --
Cont. to Dec. 98)

       The Space Telescope Imaging Spectrograph (CCD) was used to measure
CCD dark current and bias rates for the two supported amplifier settings
{GAIN=1 and GAIN=4} in order to gather data for making superdarks and
superbiases.  The data will be used to track the growth of hot pixels on
the CCD in general and within the various target acquisition apertures
specifically.  The observations were executed as scheduled, and no
anomalies were noted.

   1.3 Completed NIC/2 7860 (The Optical Emission Line Nebulae of High
Redshift Radio Galaxies)

       The Near Infrared Camera (Camera Two) was used to make high
resolution observations of the optical nebula in the high redshifted radio
galaxy 4C+40.36.  This is to compare the sizes and detailed structures of
the nebulae to the radio and visual continuum morphologies on sub-galactic
size scales, and relate them to those found in lower redshift radio
galaxies studied with HST and ground-based observatories over the same
wavelength region.  The observations were executed as scheduled, and no
anomalies were noted.

   1.4 Completed WF/PC-2 7622 (WF/PC-2 Cycle 7 Internal Monitor)

       The WF/PC-2 was used to make a set of Cycle 7 internal monitoring
calibration measurements.  A variety of internal exposures are obtained in
order to provide a monitor of the integrity of the CCD camera electronics
in both bays {gain 7 and gain 15}, a test for quantum efficiency in the
CCDs, and a monitor for possible buildup of contaminants on the CCD
windows.  A bias calibration and an internal flat calibration image were
also taken.  The observations were executed as scheduled, and no anomalies
were noted.

   1.5 Completed Two Sets of NIC/2 7828 (Detection of the Infrared Jet in
the R-Aquarii Binary System)

       The Near Infrared Camera (Camera Two) was used to make observations
of the variable binary star R-Aqrarii to detect its infrared jet.  The
nearby {~200 pc} R-Aqrarii symbiotic system is a well-known prototype for
non-relativistic astrophysical jets.  The observations were executed as
scheduled, and no anomalies were noted.

   1.6 Completed Seven Sets of STIS/CCD 8062 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude observations take in parallel with the prime science
observations.  As described in 2.1 and HSTAR 6692, the acquisitions (at
267/126151Z and at 267/2250Z) for the fifth and seventh iterations of this
proposal failed and the take data flag remained down, affecting two
observations.  Otherwise, the observations were completed as planned, and
no further problems were reported.

   1.7 Completed Two Sets of STIS/CCD 8064 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal - Backup)

       The Space Telescope Imaging Spectrograph (CCD) was used to conduct a
non-scripted parallel POMS test.  The observations were completed as
scheduled, and no problems were reported.

   1.8 Completed NIC/1/2/3 7876 (The Giant Branch Luminosity Function of
M-31's Bulge)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the central bulge of the galaxy M-31  to study its
giant branch luminosity function.  A delineation of the differences in the
luminous M giant population of the bulge of M-31 is of considerable
interest for stellar synthesis work and for understanding the evolution of
spiral bulges in general.  The observations were completed as planned, and
no problems were reported.

   1.9 Completed WF/PC-2 8059 (POMS Test Proposal: WF-2 Targeted Parallel
Archive Proposal)

       The WF/PC-2 was used to make observations in parallel with the prime
science observations.  The parallel opportunities available with WF/PC-2 in
the neighborhood of bright galaxies are treated in a slightly different way
from the normal pure parallels.  Local group galaxies offer the opportunity
for a closer look at young stellar populations.  The observations were
completed as planned, and no anomalies were reported.

   1.10 Completed STIS/CCD 8080 (STIS Spectroscopic CCD Flatfielding --
Revised)

       The Space Telescope Imaging Spectrograph (CCD) was used to make CCD
flat fielding calibration observations in the spectroscopic mode.  The
observations were completed as planned, and no anomalies were reported.

   1.11 Completed WF/PC-2 7909 (POMS Test Proposal: WF II Parallel Archive
Proposal)

       The WF/PC-2 was used to make parallel observations as part of the
POMS test proposal.  This test proposal is designed to simulate scientific
plans.  The observations were completed as planned, and no problems were
reported.

   1.12 Completed Three Sets of NIC/2 7233 (Dust Disks Around Main Sequence
Stars)

       The Near Infrared Camera (Camera Two) was used to make observations
of the dust disk around the main sequence star Tau1-Eraida.  The
observations were made with the coronagraph to minimize the effects of
glare from the bright central star.  A dark calibration image was also
taken.  As described in 2.1 and HSTAR 6692, the acquisitions (at
267/126151Z and 267/2250Z) for the second and third iterations of this
proposal failed and the take data flag remained down, affecting four
observations.  Otherwise, the observations were completed as scheduled, and
no further anomalies were reported.

   1.13 Completed NIC/2 7226 (Search for Massive Jupiters)

       The Near Infrared Camera (Camera Two) was used to make a corographic
search for massive planets around nearby, young main sequence stars.
Because of the extreme youth of these objects, any low-mass brown dwarf and
planetary companions will still be in a higher luminosity phase and thus
easily detectable.  A dark calibration image was also taken.  The
observations were executed as scheduled, and no anomalies were noted.

   1.14 Completed WF/PC-2 7431 (Snapshot Survey of Microlensed Source Stars)

       The WF/PC-2 was used to make snapshot survey images of microlensed
source star MACHO-104.  Gravitational microlensing surveys have revealed an
excess of lensing events over theoretical predictions toward both the Large
Magellanic Cloud and the Galactic Bulge.  The observations were completed
as planned, and no anomalies were reported.

   1.15 Completed NIC/3 7901 (NICMOS Post-Campaign Focus
Monitoring)

       The Near Infrared Camera (Camera Three) was used to make some
post-campaign focus monitoring observations by using star cluster NGC-3603.
This proposal is used to determine and monitor the optimal focus and tilt
settings for all three NICMOS cameras after the first NIC/3 observing
campaign.  The observations were executed as scheduled, and no anomalies
were noted.

   1.16 Completed NIC/2 7227 (A Search for Low Mass/Sub-Luminous Companions
to M-Stars)

       The Near Infrared Camera (Camera Two) was used to make a search for
low mass/sub-luminous companions to low mass M class stars.  Knowledge of
stellar and sub-stellar masses and luminosities at and below the ~0.08
M{sun} H-burning limit is of fundamental importance.  A dark calibration
image was also taken.  The observations were completed as planned, and no
problems were reported.

   1.17 Completed WF/PC-2/STIS/CCD/NIC/1/2/3 7307 (The Formation and
Evolution of Rich Star Clusters in the LMC)

       The WF/PC-2, the Space Telescope Imaging Spectrograph (CCD), and the
Near Infrared Camera (Cameras One, Two and Three) were used to make
observations of the rich star cluster NGC-1818 which is located within the
Large Magellanic Cloud in order to study its formation and evolution.
These observations will help us understand the origin and evolution of rich
star clusters in our own galaxy.  The observations were completed as
scheduled, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 11
                                        Successful : 9

       HSTAR 6692 documents the failure of the acquisitions at 267/122151Z
and at 267/2250Z when the FGS-3 search radius limit was exceeded.  The
proposals described in 1.6 and 1.12 were affected.

                          Scheduled Reacquisitions : 6
                                        Successful : 6

   2.2 FHST Updates:

                              Scheduled : 20
                             Successful : 20

   2.3 Operations Notes:

       The 48-hour MDM/IP Acceptance Test began at 267/1224Z with the
configuration of the IP line.  The test will demonstrate the correctness of
the IONET bandwidth and MDM modifications at WSC and JSC, and whether
support can be provided with concurrent orbiter and scientific user support
from SN, GN, and DSN.  Thirteen data hits were observed between 267/1309Z
and 268/0840Z, with missing minor frames ranging from three to fifteen.
1Meg realtime science was received without incident.

       The SSR EDAC error counter was cleared four times via ROP SR-1.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH